*{
    margin:0;
    padding:0;
    border: 0;
}
ul,li,ol,dl,dd,dt{
    list-style: none;
}
html,body{
    width: 100%;
    height: 100%;
    background: #fff;
}
#app{
    width: 100%;
    max-width: 750px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}
.todoapp{
    margin: 0 30px;
}
.todoapp .header h1{
    margin-top: 10%;
    font-size: 130px;
    text-align: center;
}
.todoapp .header input{
    width: 100%;
    height: 50px;
    outline: none;
    border-bottom: 1px solid #eee;
    font-size: 30px;
}
